HJ
Harry Jones — 1940 US Census Record
Model Tree available1940 United States Federal Census · Washington-County, Illinois
Our Model Tree links this Harry Jones across the 1920, 1930 and 1940 US Censuses in Washington-County, Illinois (XGBoost, ~Confirmed), with identified parents T & Maggie — first a head (b.~1903), then head of a 5-person household.
Age 37
b. ~1903
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Illinois |
| Surname | Jones |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Pilot Knob Twp |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Pilot Knob Twp |
| Est. Birth Year | ~1903 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Jo Jones | Daughter | — | 6 | ~1934 |
| Harriet Jones | Daughter | — | 3 | ~1937 |
| Harry Jones | Head | — | 37 | ~1903 |
| James Jones | Son | — | 10 | ~1930 |
| Zelma Jones | Spouse | — | 38 | ~1902 |
Census Appearances
1920
Washington, Illinois
Son, age 16
Washington, Illinois · implied b. ~1904 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Washington, Illinois
Head, age 26
Washington, Illinois · implied b. ~1904 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 25 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Washington-County, Illinois
Head, age 37
Washington-County, Illinois · implied b. ~1903 — 5 household members
| Surname | Jones |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Pilot Knob Twp |
| 1935 Residence (County) | Washington |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Harry Jones across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father T Jones (~0.92 confidence) and mother Maggie Jones (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
T Jones
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Maggie Jones
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Jones
Head · 1940 · age 37 · b. ~1903 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Washington-County, Illinois
Open full size
1940 US Federal Census — Washington-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00902-00428)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jerome Bednorkiewicz | 7 | Son | — | Illinois |
| 2 | Elmer Dempsey | 36 | Head | Laborer | Illinois |
| 3 | Alpha Dempsey | 32 | Wife | — | Illinois |
| 4 | Viva Dempsey | 14 | Daughter | — | Illinois |
| 5 | Elmer Dean Dempsey | 11 | Son | — | Illinois |
| 6 | Asa Dale Dempsey | 9 | Son | — | Illinois |
| 7 | Paul Oscar Dempsey | 8 | Son | — | Illinois |
| 8 | Clyde Wayne Dempsey | 6 | Son | — | Illinois |
| 9 | Ralph Cecil Dempsey | 4 | Son | — | Illinois |
| 10 | Douglas Ray Dempsey | 1 | Son | — | Illinois |
| 11 | Harry Jones THIS PERSON | 37 | Head | Farmer | Illinois |
| 12 | Zelma Jones | 38 | Wife | — | Illinois |
| 13 | James W. Jones | 10 | Son | — | Illinois |
| 14 | Jo Ann Jones | 6 | Daughter | — | Illinois |
| 15 | Harriet Jones | 3 | Daughter | — | Illinois |
| 16 | Harold Frejerking | 23 | Head | Laborer | Illinois |
| 17 | Louise Frejerking | 20 | Wife | — | Illinois |
| 18 | Harold Frejerking | 2 | Son | — | Illinois |
| 19 | Walter Murphy | 57 | Head | — | Nebraska |
| 20 | Margaret Murphy | 58 | Wife | — | Illinois |
| 21 | Kenneth Hall | 27 | Head | Truck Driver | Illinois |
| 22 | Elvie Hall | 30 | Wife | — | S. Dakota |
| 23 | Rosie York | 54 | Mother-in-law | Teacher | Iowa |
| 24 | Lester Coffer | 40 | Head | Pumper | Louisiana |
| 25 | Rose Coffer | 29 | Wife | — | Louisiana |
| 26 | Billie Coffer | 11 | Daughter | — | Arkansas |
| 27 | K. C. Blackburn | 23 | Head | Pumper | Oklahoma |
| 28 | Mederith Blackburn | 20 | Wife | — | Oklahoma |
| 29 | Nancy Sue Blackburn | 1 | Daughter | — | Oklahoma |
| 30 | Lawrence Krolczak | 49 | Head | Farmer | Poland |
| 31 | Laura Krolczak | 46 | Wife | — | Missouri |
| 32 | Cecelia Krolczak | 20 | Daughter | — | Missouri |
| 33 | Helen Krolczak | 18 | Daughter | — | Missouri |
| 34 | Mary Krolczak | 17 | Daughter | — | Missouri |
| 35 | Agnes Krolczak | 74 | Mother | — | Poland |
| 36 | Walter Jozwiak | 54 | Head | Assistant Patrolman | Illinois |
| 37 | Alexander Jozwiak | 23 | Son | Farmer | Illinois |
| 38 | Martha Jozwiak | 17 | Daughter | — | Illinois |
| 39 | Regina Jozwiak | 15 | Daughter | — | Illinois |
| 40 | Joseph Ruchaj | 74 | Head | — | Poland |
Pedigree Summary
Harry
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)